linux-kernel - Re: [PATCH v6 4/5] iommu/mediatek: Add mt8173 IOMMU driver

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Message-ID: <20151216151514.GI18805@8bytes.org>
Date:	Wed, 16 Dec 2015 16:15:15 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	Robin Murphy <robin.murphy@....com>
Cc:	Yong Wu <yong.wu@...iatek.com>,
	Thierry Reding <treding@...dia.com>,
	Mark Rutland <mark.rutland@....com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Will Deacon <will.deacon@....com>,
	Daniel Kurtz <djkurtz@...gle.com>,
	Tomasz Figa <tfiga@...gle.com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Rob Herring <robh+dt@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	linux-mediatek@...ts.infradead.org,
	Sasha Hauer <kernel@...gutronix.de>,
	srv_heupstream@...iatek.com, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	iommu@...ts.linux-foundation.org, pebolle@...cali.nl,
	arnd@...db.de, mitchelh@...eaurora.org, p.zabel@...gutronix.de,
	yingjoe.chen@...iatek.com
Subject: Re: [PATCH v6 4/5] iommu/mediatek: Add mt8173 IOMMU driver

On Tue, Dec 15, 2015 at 12:37:34PM +0000, Robin Murphy wrote:
> The potential issue I *do* see, looking more closely, is that
> iommu_group_get_for_dev() is setting group->domain but not calling
> the attach_dev callback, which looks wrong...

Attaching the device happens from iommu_group_add_device(), which is
called from iommu_group_get_for_dev() right after the domains are
allocated/initialized.


	Joerg

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